US116437A - Improvement in let-off motions of looms - Google Patents
Improvement in let-off motions of looms Download PDFInfo
- Publication number
- US116437A US116437A US116437DA US116437A US 116437 A US116437 A US 116437A US 116437D A US116437D A US 116437DA US 116437 A US116437 A US 116437A
- Authority
- US
- United States
- Prior art keywords
- levers
- looms
- motions
- improvement
- friction
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 241000220010 Rhode Species 0.000 description 4
- 238000010276 construction Methods 0.000 description 4
- 210000002683 Foot Anatomy 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000001105 regulatory Effects 0.000 description 2
- 241000894007 species Species 0.000 description 2
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D59/00—Self-acting brakes, e.g. coming into operation at a predetermined speed
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D49/00—Details or constructional features not specially adapted for looms of a particular type
- D03D49/04—Control of the tension in warp or cloth
- D03D49/06—Warp let-off mechanisms
- D03D49/08—Warp beam brakes
Definitions
- A denotes the yarinbeam
- B the loomframe, al being the. cross-girt, or that immediately underneath the yarn-beam.
- a frame, E arranged between the two levers and fixed to the girt, is a shaft, F, provided with a wheel, G, the shaft, at its outer end, being prismatic to receive a key.
- a ratchetwheel, H is also xed to the inner side of the wheel G, and receives and engages with a pawl, I, pivoted to the upper arm of a lever, K, whose fulcrum is the said shaft.
- the belts and the wheel, the pawl and its lever, combined and arranged in manner as described and as represented, with the spring in the levers of the friction-bands, constitute a means by which the tension or draft of the spring on the band-levers may be adjusted and regulated, as circumstances may require.
- the yarn-beam By casting the belts off the friction-band levers the yarn-beam will be so relieved of the friction of the bands as to enable it to be readily revolved by an operative when it may be necessary for him to do so to effect the piecing up of a warp, or for any other purpose.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Woven Fabrics (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
- Pretreatment Of Seeds And Plants (AREA)
Description
UNITED STATES PATENT OFFICE.
FREDERICK WILLIAM GRAIOHEN, OF PROVIDENCE, RHODE ISLAND, ASSIGNOR TO EDWARD BARROWS AND JOSEPH OLAYTON, OF DRAOUT, MASS.
IMPROVEMENT IN LET-OFF MOTIONS OF LOOMS.
Specication forming part of Letters Patent No. 116,437, dated June 27, 1871.
To all whom it may concern:
Be it known that I, FREDERICK WILLIAM GRAICHEN, of the city and county of Providence,
of the State of Rhode. Island, have invented a new and useful Friction Apparatus for the Yarn Beam of a Loom; and do hereby declare the same to be fully described in the following speci iication and represented in the accompanying drawing, of which- Figure l is a top view, Fig. 2 a front elevation, and Fig. 3 a transverse section of it and a yarnbeam and its supporting end of aloom-frame.
In such drawing, A denotes the yarinbeam, and B the loomframe, al being the. cross-girt, or that immediately underneath the yarn-beam. Two friction-straps or bands, O O, attached at one end of each to the girt, extend over and upon the peripheries of the heads b b of the yarn-beam,
and are connected to the eyes of two screws, cc. These screws are extended through two levers, I) D, whose fulcrums d d are at or near their outer ends, the two levers being arranged, With respect to 'the girth, in manner as represented. Within a frame, E, arranged between the two levers and fixed to the girt, is a shaft, F, provided with a wheel, G, the shaft, at its outer end, being prismatic to receive a key. A ratchetwheel, H, is also xed to the inner side of the wheel G, and receives and engages with a pawl, I, pivoted to the upper arm of a lever, K, whose fulcrum is the said shaft. A spring, L, fastened at one end to the lower arm of the lever K, and at the other to the floor, is arranged as represented. Furthermore, two bolts, M N, fastened to the periphery of the wheel G, are extended partially around the wheel and underneath guiderollers O O, and are looped upon the inner ends of the two levers D D, all being as represented.
The belts and the wheel, the pawl and its lever, combined and arranged in manner as described and as represented, with the spring in the levers of the friction-bands, constitute a means by which the tension or draft of the spring on the band-levers may be adjusted and regulated, as circumstances may require.
By casting the belts off the friction-band levers the yarn-beam will be so relieved of the friction of the bands as to enable it to be readily revolved by an operative when it may be necessary for him to do so to effect the piecing up of a warp, or for any other purpose.
I make no claim to the yarn-beam friction apparatus shown and described in the British patent No. 2,989, for 1868, granted to Gadd and Moore. My mechanism differs materially therefrom not only in construction, but in having but one spring to perform the functions of several springs as employed in the said Gadd and Moores apparatus. Furthermore, it has a series of levers, one of which is directly connected with the spring and the latchlpawl. B y pivoting' the pawl I to the lever K and making use of such lever one spring only becomes necessary to operate the whole mechanism connected with it. Thus I secure one important advantage in construction and operation, and, besides, my arrangement greatly simplifies the mechanism.
I therefore claim- My improved yarn-beam friction apparatus as composed of instrumentalities as described, arranged, and combined as set forth, such instrumentalities consisting of the single spring L, the lever K, the paw] l, the ratchet-Wheel H, the wheel Gr, frame E, the shaft F, the bauds M N, guide-wheels O O, and levers D 1). provided with the friction-bands C O, applied to the yarnbeam as represented.
F. W. GRAIGHEN.
Witnesses:
R. H. EDDY, J. R. SNOW.
Publications (1)
Publication Number | Publication Date |
---|---|
US116437A true US116437A (en) | 1871-06-27 |
Family
ID=2185896
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US116437D Expired - Lifetime US116437A (en) | Improvement in let-off motions of looms |
Country Status (1)
Country | Link |
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US (1) | US116437A (en) |
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0
- US US116437D patent/US116437A/en not_active Expired - Lifetime
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